I'm in the process of installing a new clutch, and while the trans was out I decided to install a new rear main seal. While putting it all back together, I'm noticing the flywheel housing has a little bit of room for movement. there's no dowels or anything to align it and I cant seem to find anything on the internet about this specific problem. I've centered it as best I can in relation to the crankshaft but I'm wondering if there's something else I need to be doing. Manual doesn't mention anything either